Bug 2078466 (CVE-2022-1462) - CVE-2022-1462 kernel: possible race condition in drivers/tty/tty_buffers.c
Summary: CVE-2022-1462 kernel: possible race condition in drivers/tty/tty_buffers.c
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-1462
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2078867 2078868 2078869 2078870 2090713
Blocks: 2078422 2078496
TreeView+ depends on / blocked
 
Reported: 2022-04-25 12:05 UTC by Marian Rehak
Modified: 2024-02-08 16:51 UTC (History)
52 users (show)

Fixed In Version: kernel 5.5 rc5
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem. The issue occurs in how a user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read unauthorized random data from memory.
Clone Of:
Environment:
Last Closed: 2023-05-16 18:50:16 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:2148 0 None None None 2023-05-09 07:11:15 UTC
Red Hat Product Errata RHSA-2023:2458 0 None None None 2023-05-09 07:50:11 UTC
Red Hat Product Errata RHSA-2023:2736 0 None None None 2023-05-16 08:04:26 UTC
Red Hat Product Errata RHSA-2023:2951 0 None None None 2023-05-16 08:33:17 UTC
Red Hat Product Errata RHSA-2024:0724 0 None None None 2024-02-07 16:28:54 UTC

Description Marian Rehak 2022-04-25 12:05:53 UTC 
A possible race condition vulnerability in drivers/tty/tty_buffers.c
Comment 6 Marian Rehak 2022-05-26 12:22:41 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2090713]
Comment 7 John Haxby 2022-05-27 11:05:54 UTC 
According to https://www.openwall.com/lists/oss-security/2022/04/21/1 this is actually a concurrency use-after-free in vgem_gem_dumb_create.
Comment 8 John Haxby 2022-05-27 11:40:57 UTC 
Sorry, please ignore that.   I'm totally confused.
Comment 9 Justin M. Forbes 2022-05-30 16:16:12 UTC 
This was fixed in Fedora with the 5.5.5 stable kenrel updates.
Comment 19 errata-xmlrpc 2023-05-09 07:11:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2148 https://access.redhat.com/errata/RHSA-2023:2148
Comment 20 errata-xmlrpc 2023-05-09 07:50:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2458 https://access.redhat.com/errata/RHSA-2023:2458
Comment 21 errata-xmlrpc 2023-05-16 08:04:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2736 https://access.redhat.com/errata/RHSA-2023:2736
Comment 22 errata-xmlrpc 2023-05-16 08:33:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2951 https://access.redhat.com/errata/RHSA-2023:2951
Comment 23 Product Security DevOps Team 2023-05-16 18:50:10 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-1462
Comment 26 errata-xmlrpc 2024-02-07 16:28:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0724 https://access.redhat.com/errata/RHSA-2024:0724
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